Emergency Car Battery starter on boat engine?

Tim Good

Tim Good

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Ok so you can now buy smallish lithium batteries that output USB, 12v and high power 12v to jump start a car. They're great as a travel battery for phones, laptops and also as a car jump starter but could they start a perkins 80hp Diesel engine do you think?

The unit I recently tested on a car work perfectly and written in the side was power 600amps jump starter.

It was this one: http://www.nekteck.com/product/nekt...-van-suv-boat-smartphone-usb-device-and-more/
 
The spec shows this : 600 amps of power jump starts your five liter gas or three liter diesel vehicle engine up to twelve times and to get you back on the road fast

This is much bigger than your Perkins but it seems unlikely to me.
 
northcave said:
Ok so you can now buy smallish lithium batteries that output USB, 12v and high power 12v to jump start a car. They're great as a travel battery for phones, laptops and also as a car jump starter but could they start a perkins 80hp Diesel engine do you think?

The unit I recently tested on a car work perfectly and written in the side was power 600amps jump starter.

It was this one: http://www.nekteck.com/product/nekt...-van-suv-boat-smartphone-usb-device-and-more/
Click to expand...

Yes start 80hp no problem. We had a neighbour with a large Hybrid that had a 6 cylinder 2.5 petrol, i jumped that quite a few times + a few diesels > 2ltr
 
Hadenough said:
With what? The same unit as the OP is proposing??
Click to expand...

I cant say it is , its out in the barn, but has i think a 22Ah battery in it but cant tell off hand what the CCA is , sorry.
Its a small pack but is very useful & started the 2.5 Gas engine in a trice
 
ghostlymoron said:
The spec shows this : 600 amps of power jump starts your five liter gas or three liter diesel vehicle engine up to twelve times and to get you back on the road fast

This is much bigger than your Perkins but it seems unlikely to me.
Click to expand...

It does seem to be unreasonably tiny but capacity is quoted as 12,000mAh. If the engine is going to fire quickly you'd probably use 0.5 - 1.0Ah capacity. Doubt you'd get 12Ah when cranking an engine but I imagine that's where they get 12 starts at 1Ah each. Perhaps 5-6 would be closer, or once if lucky in winter with a slow starting engine.

Surprised capacity isn't quoted as 12,000,000 μAh. I imagine that advertising guys would try it on if it was used widely enough. I guess they think everyone is used to seeing it for iPhones, tablets etc. with only a few understanding the term.

I wondered where the gas engines and liters came in until I saw the advert. Seemed to catch on, unless others have engines running on LPG. :D:D
 
If its got a 22Ah Lead Acid in it it is not the same

HOWEVER

Having seen these LiIon units at work I'd be surprised if it couldn't start a 80Hp Diesel...

Something like this: https://www.ebay.co.uk/itm/Emergency...e/262719830710
Click to expand...
But - have you actually seen it happen?
Click to expand...

Not on a 80Hp Boat Diesel...

Seen it work on 2L Diesel Car Engines.

Various videos on youtube showing them working on 2.7L Diesels

Here is a rather badly done example: https://www.youtube.com/watch?v=djwV5ZS6xJM starts a 2.7L with no Lead Acid attached at all. Seen videos with cars covered in snow having been left all winter. Suspect far bigger than a boat engine.
Click to expand...
 
Why would your normal starter battery not start your engine, don't you look after it?

Look after your battery and you don't need another "just in case".

Also, a "just in case" battery needs more looking after because you never use it, so it gets forgotten.

Forget it and stick with what most folk use, domestic and engine batteries, it works or folk wouldn't do it.
 
I was at a car dealer's a while back, a unit the size of vhs cassette started a 1.6 car effortlessly.
I was more impressd by that than the cars.
 
northcave said:
Ok so you can now buy smallish lithium batteries that output USB, 12v and high power 12v to jump start a car. They're great as a travel battery for phones, laptops and also as a car jump starter but could they start a perkins 80hp Diesel engine do you think?

The unit I recently tested on a car work perfectly and written in the side was power 600amps jump starter.

It was this one: http://www.nekteck.com/product/nekt...-van-suv-boat-smartphone-usb-device-and-more/
Click to expand...

The link ends up at Amazon US, and the charger doesnt seem to be available on Amazon UK. Can you buy one in the UK?
 
One would imagine that this lithium battery would certainly assist by jump start a boat battery such that one might be tempted to run just one battery system for domestic and engine. olewill
 
While these things have plenty of cranking amps, the don't have huge capacity.
A lot of engine problems seem to be about more than just flat batteries.
E.g. you can have a fuel bleeding problem which takes a lot of cranking.
You can have other issues resulting in bad starting.
I'm sure we've all heard engines being cranked repeatedly and not always going at the end of it?
 
they are ok if they work straight away, but they do not like being worked hard. We have a decent one at work (no usbs though) that has inbuilt protection from over use.
I also bought a couple of cheap lidl ones which have 2 x usb and a lamp as a general back up power bank. They work well enough for charging phones etc, and testing 12v stuff. Will run the VHF too. But the performance for cranking was poor.
 
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